| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 121 |
33.2%
|
| 0 | 104 |
28.5%
|
|
| 1 | 1 |
0.3%
|
|
| 2 | 3 |
0.8%
|
|
| 3 | 2 |
0.5%
|
|
| 4 | 1 |
0.3%
|
|
| 5 | 5 |
1.4%
|
|
| 10 | 15 |
4.1%
|
|
| 12 | 1 |
0.3%
|
|
| 15 | 4 |
1.1%
|
|
| 20 | 9 |
2.5%
|
|
| 25 | 3 |
0.8%
|
|
| 30 | 9 |
2.5%
|
|
| 40 | 17 |
4.7%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 13 |
3.6%
|
|
| 60 | 3 |
0.8%
|
|
| 65 | 1 |
0.3%
|
|
| 70 | 6 |
1.6%
|
|
| 75 | 5 |
1.4%
|
|
| 80 | 4 |
1.1%
|
|
| 85 | 2 |
0.5%
|
|
| 90 | 2 |
0.5%
|
|
| 95 | 1 |
0.3%
|
|
| 100 | 32 |
8.8%
|